Rotary valve for gas-engines.



L. C. KEMMHJG. ROTARY VALVE FOR GAS ENGINES.

APPLICATION FILED JUNE 14, l9l2- RENEWED OCT. 1, 1914. 1,13%,4fi1 L Patented. 1310128, 1915.

2 SHEETSSHBET 1.

.W m m 6 Z i: :3. KEMP-film ROTARY X'MVE FOR GAS ENGINES.

APPLECATIDN FILED JUNE H, i912. RENEWED OCT. M1914.

i lgQ zgi fil Patented Apr. 6, 1915.

2 SHEETS-SHEET 2.

engines, whereby the cost of production and Application filed June 14. 1912, Serial No. 7823,?523.

To aZZ whom it may concern:

Be it known that I, LEONARD ,C. K In.- r/rmo, citizen of the United States, residing at Denison, in the county of Crawford and State of Iowa, have invented certain. new and useful Improvements in Rotary Valves for Gas-Engines, of which the following is a specification.

This inventionreletes to internal conibustion engines, and has, for its object the provision-of e valve so constructed that single valve will control the intake and exhaust of all the cylinders.

Incidental objects of the invention are to provide n. construction whereby the valve will. fit gas-tight against its seat, while at the some time it will be permitted to rotate easily, so as to attain the desired elilcicnt operetion.

The invention also seeks to improve, crally, the construction and arrangement the controlling valve of multiple-cyli nmintenence will be reduced.

The invention is fully illustrated in the accompanying drawings, and will'be herein after first fully described and then more particularly pointed out in the appended claim.

in the drawings:--Figure l is c longitudinnl section of n multiplecyliuder on nine equipped with my improved valve; Fig. 52 is transverse section or" the same; 3, i, and 6 are enlarged diugrzinr inatic transverse sections showing the posir tion of the valve as though taken, respectively, on the lines 3-3, 47-4, 5, and 6-43 of Fig. l.

The engine cylinders, 1, will be preferably cast as one integral body and may be of any well-known form, a head or heads 2 being fitted on the upper ends of the cyl inders so as to extend over the same, and the heads are constructed with inlet pas sages 3 and cxhaustpussrfges 4:, which are disposed opposite each other an d extend dim metrically across the ends of the cylinders. The inlet and exhaust passages for each cylinder communicate with the same through a common port 5 in the uper end thereof, us shown most clearly in Fi x2, and the heads are constructed with a partition 5 bridging the inner ends of the inlet and exhmist 32S- and forming, with the upper ends of the cylinders, a tapered valve sect, as shown most clearly in Fig l.

li evt ented Apr. G, 1915.

Renewed. october 1, 193.4. Serial No. 864,529.

.lhe valve consists of it tapered body 7 fitting against and within thesaid tapered valve seat, suiiiciently snug to form a gastight joint therewith, but, at the same time, cepable of rotating easily within the seat. ll e valve be solid or hollow, as preed, but, if hollow, should have sufficiently thick walls to withstand long con tinuous weer.

n the exterior of the valve are formed recessions 8, which are so located as to ter with the upper ends of the respective cylinders. These recesses or depressions are preferably constructed with curved buses, and each extends through one fourth of the circumference of the valve, so that, when one end or edge ofthe recess or depression registers with the port 5 in the top of the cylinder, the opposite end ofi seid recess or depression Willregister with the in et or exhaust passage, the said deor recess in the valve thereby esinsg comuniuication between the cyland the inlet or exhaust port, as will erstood.

sses 8 extend only part way .c valve body and are successively located. :illerent points around the said body, s will be readily understood, so that the positions of the said recesses will correspond to. the positions of the pistons in the respective cylinders and to the cycle of operetion ot' the cylinders, that is to say, in an engine having four cylinders, each recess or depression will be located in av different quadrant of the valve from each of the other recesses, and eaehlquadrent of the valve will contain but one recess.

The valve body is, of course, tapered to correspond to the toncred formation of the cylinders is on extension 9 having an adjusting: screw 10 "mountml in its end, said' screw being provided with a plate or head 11 at its inner end, between which and the udiacent end of the valve, are a series of anti-friction devices 1 onstituting an end thrust bearing for the v, e, which ,will prevent axial movement 0: the valve but permit its free and easy r\ ution tilt the opposits end of the cylinoer is a threaded tubular extension 13, up n which isfitted a can 1i, and the v'ulve is constructed with a stem or short shaft 15 extending-through the said extension 13 and irurneled in the cap 4, 2. sprint to being around the said I stem between the cap '14 and a disk or head 1 1'1 adjacent the end of the valve, so that the said disk or head will be yieldingly held toward the valve to prevent endwise movement of'the same. Anti-friction devices 18 are fitted between the. disk or head 17 and a the end of the valve, so as to permit the :easy rotation of the same, and the cap lei -may .be"'adjusted longitudinally of the extension'13 to'vary the tension of the coiled spring, so that the valve will be held to its .sat with the pressure necessary to the particula'r engine.

",of the shaft 15 and meshing with a pinion- 20onthe upper end of a shaft 21 which is geared directly'to the crank shaft 22 of the. engine, the several members being so proportioned that the valve will rotate at onerhalf'the speed of the crank shaft. 7 It' will be noted, upon reference to Fig; 1,

that the port 5 in the upper end of the cylin- I der extends approximately entirely across the same, v so that it will accommodate the passage ofa large volume of .thev gas and proper operation of the engine will be ad- :mitted to the cylinder. In Figs. 2 and 3,

A the valve is illustrated with'the recess or depressed therein extending across the inlet passage i-i, the intake stroke having been" completed and the port 5 being closed, The engine having been started, the valve with -of course, rotate and with respect to. a

sively carried to the positions shown in Figs. 4, 6, and 5, Fig. 4 showing anvunmutilated portion of the. peripheryof the valve extending across the port 5 in the cylinder and,

the recess 8 diametrically opposite said which is, consequently, closed during the compression and the explosion or working .1 strokes.

The port will, remain closed or blocked, by the valve during the explosion stroke, which isthe position illustrated in Fig.,.6, and the continued rotation of the valve will cause the .,-recess or depression therein to establish communication between the cylinder and the exhaust passage 4: through the port 5 and then move across said port, as-shown'inFig. 5. During the intake stroke of thepiston, the valve will 1 move from the positionsliown in Fig. 5 to that shown in Fig. 3 and, obviously, during that movement will establish communication between the passage 3 and port 5 to to that Shown in'Fig. 5, establishing communication between the cylinder and the exhaust passage as the stroke starts and cutgreatly reduced by my invention, and that the frictional resistance to the operation of the parts is likewise reduced. .As the valve rotates continuously, thereis, of course, no jarring or pounding noise occasioned by its operation, and the comfort or pleasure of persons occupying the automobile equipped with the invention is enhariced' The construction permits the use of large valve openings, so that free. passages are provided toand from the intake and ex haust manifolds, and consequently an increased power is derived from the engine. The tapered formation of the valve. overcomes all necessity for grinding the same to permit it to its seat, and wear onjthe consequently an adequate supply for thepanda-11d shift the valve slightly axially, so that, as the valve wears it will fit more.

closely and smoothly against its seat. As

thevalve is constantly'rotating upon its seat and is in constant contact therewith, carbon deposits cannot accumulatelon the valve to y v choke the same, and the device is not liable one cylinder the said recess 8 will be succes;

to get outof order. By varying the size of the valve, the openings for the passage of the gases may be made any desired size, and the valve is, consequently, especially adapted to motors employed to perform heavy service.

.What I'claim isz in an' internal combustion engine,- the combination of a plurality of cylinders arranged side by side, a head extending over all the cylinders and provided with a singleadmission port at the end of each cylinder and with inlet and outlet tubes eszending transversely from its opposite sides'over each cylinder and terminatmg immediately adjacent the admission port in'the end of the cylinder, a rotary valve mounted inthe said head immediately over the admission portsin the cylinders and between. the inlet and outlet tubes of the same, said valve having both its ends and its entire circum-.- ferential surface closed to the admission of fluid and provided 'in its circumferential surface with spaced recesses'adapted to suecessively register with the admission ports in the respective cylinders, tubular exten- 'sions atthe ends of the head, an adjustable 1; thrust hearing mounted-1n one of tubular extensions and engaging the adjacent end of the valve, *efsheft" extending from the oppos teI end ef the valve, a disk loose upon shaft, cap adjustably mounted, Q the adjacent tubular extension of the head and providing a bearing for said shaft, a spring coiled around the shaft within said extension between said cap and said disk, and valve-operating gearing connected with saidshaft. 10 In testimony whereof I aflix my signature in presence of two Witnesses;

LEONARD C KEMMIJ \Vitnesses L. SEEMANN', R. SHAW- VAN, 

